Tests

warp: delete unnecessary istatus IORef #271

Job	Run time
Stack (ubuntu-latest, --resolver nightly --stack-yaml stack-nightly.yaml)	11m 8s
Stack (ubuntu-latest, --resolver lts-21)	11m 2s
Stack (ubuntu-latest, --resolver lts-20 --stack-yaml stack-lts-20.yaml)	10m 20s
Stack (ubuntu-latest, --resolver lts-19 --stack-yaml stack-lts-19.yaml)	11m 15s
Stack (ubuntu-latest, --resolver lts-18 --stack-yaml stack-lts-18.yaml)	10m 13s
Stack (macos-latest, --resolver nightly --stack-yaml stack-nightly.yaml)	17m 7s
Stack (macos-latest, --resolver lts-21)	16m 1s
Stack (macos-latest, --resolver lts-20 --stack-yaml stack-lts-20.yaml)	20m 28s
Stack (macos-latest, --resolver lts-19 --stack-yaml stack-lts-19.yaml)	25m 35s
Stack (macos-latest, --resolver lts-18 --stack-yaml stack-lts-18.yaml)	15m 51s
Stack (windows-latest, --resolver nightly --stack-yaml stack-nightly.yaml)	15m 57s
Stack (windows-latest, --resolver lts-21)	16m 56s
Stack (windows-latest, --resolver lts-20 --stack-yaml stack-lts-20.yaml)	17m 7s
Stack (windows-latest, --resolver lts-19 --stack-yaml stack-lts-19.yaml)	18m 10s
Stack (windows-latest, --resolver lts-18 --stack-yaml stack-lts-18.yaml)	18m 51s
	3h 56m 1s

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